poole



2 Sheets-Sh eet.

, J M. POOLE. MACHINE FORGRINDING ROLLERS- N0.104,492.

Patentd June 21,1870

J, MORTON BooLnjor WILMINGTON,

nnnawmnnstrenon TO HIMSELF,

WILLIAM' PQRTER, AND-THOMAS POOLE, 0F SAME PLACE.

' Letters Patent No. 104,492, dated June 21, 1870.

vmrnovsnnnrfmmecnmn r-on ammal i l sam The Schedule referred tg/in-thsse Letters Patent and-making part of the 1e.

do cll when fln'w/gj cqncern: a r i Be it know-nthat I,'J, Momon Room, of Wilmmgtomin-the county of New Castle, and State of Delaware, have invented a Machine for Grinding and Reducing Rollers; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to making'part of this specification, in' which-- Figure 1, plate1;, i s a' section through the machine, taken longitudinally;centrally, and in a vertical plane, showing a roller which has been reduced from its ends to its midd1c.,' .1 I

Figure 2, platfi 1, is top view of the machine, and

aroller reduced from both ends to its middle. .:Figure..-3, plate'-2,.' is;a section-taken transversely and verticallythrouglrrthe machine. yFignre 4 shows a roller which has been reduced from one. end to the other. K

Figure}? shows "a roller which has been reduced from the middle of its length toboth ends.

Similar letters of reference indicate corresponding P ts in'the several figures. tlrc--construction=1of various kinds of machinery,

o'rinstancc, as machinery for rolling sheetthe rollers arfj-requiredto be slightly smaller in the middle than jtztheir ends,.so that, when they expand-by heat, theyhviil be straight or cylindrical,

,Also, inmachiner ,'-.ffor calendering paper, the 'lower rollers in the staclr ztre slightly larger in the middle than at the ends todompensate for their bending under tbeimmensc weight and pressure they are requiredto sustain. 1

The object of my .imventiou is to construct a machine which will reduce rollers so as to taper them either from one end to the other, from their ends toward the middle of their length, or from the middle of their length to their ends. v

To enable others s illed in the art to understand my invention, I will escribe one practicable mode of carrying it into effect; a

In the accompanying drawing--- i A represents the {horizontal bed of the machine, which may be constructed of any required length and width,'and which sllbuld besubstantially supported upon a frame orstand, somewhat after the manner of constructing the frange or stand of a turning-lathe.

Uponthis bed, an moving in suitable guide-ways \V W, which are pa iallel to one another, is a horizontal slide-rest, E, arranged transversely across the uppervsurface of the bed, and moved in a direction with the length of the latter by means of a screw, 1).

This screw D is s tpported by, bearingsa a, passes through a nut, g,' on the bottom of the slide-rest E, and may be turned some to feed the latter by any the accompanying drawing I suitable mechanism operating in harmony with the grinding or reducing mechanism. g

, Upon the slide-rest E, and held in place by suitable guides ff, are two tool-rests F F, whieh carry grindlug-rollers or wheels G G, or other suitable reducing devices Tlie'wheels or reducing deviccs'G- G are fixed to shafts d d, on which belt-pulleys b b' are applied, so that rotary motion can be given to said devices at the same time that they are moved with the slide-rest from one end to the other of the bed A.

The tool-rests F F are arranged on opposite sides of the longitudinal (miter of the machine, and can be adjusted nearer to or further from each other, by meansof screwsc e.

{l hesc screws have hand-wheels I applied to their outer ends. They are supported in and prevented from having. endwise' motion by the bearings '01 i, and they pass through nuts an m on shown in llg. 3. a

At or near the extremities of the bcdA, and sus- --tained by screw-supports O 0, having handewheels c c on them, are the bearings l3 B, for the object to be operated on, These. bearings are vertically adjustable, and are adapted for receiving and a'fl'ording substantial supports' to the ends of the object J, as shown in the drawing. I

In practice the journal-boxes in the bearings B B should be pivoted, or otherwise so constructed as to accommodate themselves to the d-ifi'erent angles of inclination from a horizontal plane, which it may be desired to give to the object J to be operated on.

Provision should also be made for giving the object J rotary motion while being reduced by the devices Ogwmtiou.

To produce the roller shown in figs. 1, 2, and 3, I raise one end of the-roller J above, and the other I depress a like distance below a horizontal plane passing through the axis of the grinding devices G, and grind the roller until the devices G G move tangent to the circumference of the roller from one extremity to the other, or from'end to end.

Togrind the rollershown in fig. 5, I elevate one end of the roller in such manner that its axis will in-' tersect a plane passed horizontally-through the centers'of the grinding devices G G only at one extremity of this roller. '].i', in this position, I commence to grind the roller, it will be more reduced in diameter at the end which has not been elevated than at the opposite end, and Icontinue' to reduce it in this way the bottoms of the tool-rests, as

a roll, Ireduce the same as represented by fig. '5. If,

instead of repeating the process with the opposite end of the roll, as just described, I continue to grind until the grinding-wheels move parallel to the circumference of the roll, from one end to the other, I produce the roller shown by figA.

Having described my invention,

What I- claim as new, and desire to secure by Letters Patent, is 1 The manner of reducing the surface of a cylindrical object by means of one or more grinding or reducing devices, moving parallel to a vertical plane passing through the axis of said object, but inclined to a plane passinghorizontally through its axis, substantially as described.

\Vitnesses: J. MORTON POOLE.

WILLIAM HAYES, ALFRED D. Poona. 

